Unable to connect to internet suddenly

[yusheng.mei]

The internet was working fine and then all of a sudden it disconnected and a yellow triangle appeared next to the internet symbol at the bottom right corner. It says it is an unidentified network and there is limited connection. I tried connecting my laptop through the ethernet cable and it worked fine so I dont believe its a router problem. In device manager, under other devices, there is a yellow triangle next to PCI Simple Communications Controller. I dont know if that might be the problem or not. My model is the z87-45g. Any help would be appreciated.

 

[yusheng.mei]

After some testing, I realized that the problem was coming from my powerline adapters. Apparently they worked for a while without installing their software. I installed it now and it worked.

 

[pandaz]

Good that you got it working